We apologize for the delayed response, Mike. We want to make sure that your issue gets resolved. A configuration error can cause your Office apps to load slowly. In line with this, we suggest that you download and run the
Microsoft Office Configuration Analyzer Tool (OffCAT). This tool provides a quick and easy way to analyze Microsoft Office programs for known configurations that cause problems. To download and run OffCAT, refer to the following link:
Office Configuration Analyzer Tool (OffCAT) information.
Additionally, you might be experiencing this issue due to a software conflict that affects Office such as a third-party antivirus software. To rule out any software conflicts, let's perform a
clean boot. When you start your computer in a clean boot state, it starts by using a minimal set of drivers and startup programs. This troubleshooting method is designed to isolate if this issue is caused by a startup program or service. For steps
on how to perform a clean boot, you can refer to the following link:
How to perform a clean boot in Windows.
After you have finished troubleshooting, you may refer to the Reset the computer to start normally after clean boot troubleshooting section to reset the computer to start normally.
Keep us updated with the results, and we will be glad to assist you further.